有声读物: Man and His Ancestor: A Study in Evolution

An examination of Charles Darwin's theory of evolution and subsequent texts, written for the general public at the turn of the twentieth century, "[...] to dwell on the various significant facts that have been discovered since Darwin's time, and to offer certain lines of evidence never before presented in this connection and which seem to add much strength to the general argument.[...]" (Preface) - Summary by Kathleen Nelson